Bolmgren Kjell, Eriksson Ove, Linder H Peter
Department of Botany, Stockholm University, SE-106 91 Stockholm, Sweden.
Evolution. 2003 Sep;57(9):2001-11. doi: 10.1111/j.0014-3820.2003.tb00380.x.
Biotic pollination is thought to correlate with increased interspecific competition for pollination among plants and a higher speciation rate. In this study we compared patterns of flowering phenology and species richness between abiotically (wind) and biotically pollinated plants, using phylogenetically independent contrasts. We compiled phenological data from eight local seasonal floras, in which we found geographically overlapping sister clades. Of 65 documented origins of wind pollination, we were able to use up to 17 independent contrasts. In contrast to previous studies we found no difference in global species richness between wind- and biotically pollinated sister clades. Regarding phenology, we found wider phenological spread in biotically pollinated clades, earlier flowering onset in wind-pollinated trees, but no difference in duration of flowering between pollination modes. These results corroborate previous views that niche space is more constrained for wind-pollinated species, and that niche partitioning is less important between wind-pollinated plants compared to plants pollinated by animals.
生物授粉被认为与植物间对授粉的种间竞争加剧以及更高的物种形成速率相关。在本研究中，我们使用系统发育独立对比，比较了非生物（风）授粉植物和生物授粉植物之间的开花物候模式和物种丰富度。我们汇编了来自八个当地季节性植物区系的物候数据，在这些植物区系中我们发现了地理上重叠的姐妹分支。在记录的65个风媒传粉起源中，我们能够使用多达17个独立对比。与先前的研究不同，我们发现风媒授粉和生物授粉的姐妹分支在全球物种丰富度上没有差异。关于物候，我们发现生物授粉分支的物候分布更广泛，风媒授粉树木的开花起始更早，但授粉方式之间的开花持续时间没有差异。这些结果证实了先前的观点，即风媒授粉物种的生态位空间受到更多限制，并且与动物授粉的植物相比，风媒授粉植物之间的生态位划分不那么重要。
